Hi, I am new to this forum thing so appologies, but thought I should share what I did. Had the same problem. Panning around the VC of the JS41 was terrible and I though I would not fly it again. (Still flew nice just did my head in with grey/blue translucent blocks everywhere). I Never had it after install and flew for ages, then one day it just started and got worse and worse until it showed up on every occassion the plane was loaded.I had not added or changed anything to do with the plane, FSX or the computer. I read that it is something in the icing setup that causes this in some copies of the plane. I have turned off all the icing in the config manager and left everything else at high settings. Not had the problem since.Hope this helpsAndy